The Front Desk Review

Sea to Summit · Updated June 2026

Spark SpII Ultralight Down Sleeping Bag: price & specs

Spark SpII Ultralight Down Sleeping Bag. Every price and spec below is linked to its source and dated — no guesses.

Source: advnture.com verified ✓ corroborated verify in ledger

BronzeDeskmark48/100#11 of 13 in class

The Spark SpII Ultralight Down Sleeping Bag is listed at $409 on advnture.com as of 2026-06-27, #14 cheapest of 17 sleeping bags (median $200); other retailers may be lower. It earns a Bronze Deskmark — 48/100 pay-blind standing, #11 of 13 in class.

Verified Jun 27, 2026 · figures linked to their source in the table below

Cheapest sleeping bags: Brazos 20F Sleeping Bag — $59

See Spark SpII Ultralight Down Sleeping Bag on Amazon Live price at the store — may differ from the dated listed price above. As an Amazon Associate we earn from qualifying purchases.
Spark SpII Ultralight Down Sleeping Bag — Sea to Summit
Image: advnture.com (© Sea to Summit)

Is the Spark SpII Ultralight Down Sleeping Bag a good buy?

At $409, the Spark SpII Ultralight Down Sleeping Bag is #14 cheapest of the 17 sleeping bags we track, where the median is $249.95. On the spec sheet, its packed weight of 1.17 lb is the lowest of the 13, its temperature rating f of 28 is above the median of the 19, and its fill power of 850 is at the median of the 11.

Specifications

Price (US)$409 MSRP per advnture.com review citing Sea to Summit US pricing
BrandSea to Summit
Released—
Temperature rating f28
Insulation typedown
Fill power850
Shapemummy
Packed weight (lb)1.17
Packed size2.5 L (approx. 1-liter bottle size)
Zipper side—
Product noteLower limit 28F / -2C; comfort 38F / 4C; Ultra-Dry Down PFAS-free treatment; regular size; 530 g / 18.7 oz

Source: advnture.com (verified 2026-06-20) · corroborated by backcountry.com. Verified: lower limit 28F / comfort 38F, 850+ FP Ultra-Dry Down, regular weight 530 g (18.7 oz / 1.17 lb), packed ~2.5 L, price $409 confirmed via Advnture review and corroborated by Backcountry. Zipper side not determinable; left null. Corroboration URL updated to Backcountry.

Is the Spark SpII Ultralight Down Sleeping Bag worth it vs cheaper sleeping bags?

Spark SpII Ultralight Down Sleeping Bag against its closest cheaper and pricier sleeping bags on the specs that matter — every value sourced. See all 17 ranked

ProductPriceTemperature rating fInsulation typeFill powerShapePacked weight (lb)
Spark SpII Ultralight Down Sleeping Bag this$40928down850mummy1.17
Revelation Sleeping Quilt$37020down850quilt1.24
Parsec 20 Sleeping Bag$413.5120down900mummy—

Frequently asked questions

How much does the Spark SpII Ultralight Down Sleeping Bag cost?

The Spark SpII Ultralight Down Sleeping Bag has a US price of $409 (MSRP per advnture.com review citing Sea to Summit US pricing), as of 2026-06-20.

How does the Spark SpII Ultralight Down Sleeping Bag compare on price?

At $409, the Spark SpII Ultralight Down Sleeping Bag is #14 cheapest of the 17 sleeping bags we track, where the median is $249.95.

What are the Spark SpII Ultralight Down Sleeping Bag's key specs?

Spark SpII Ultralight Down Sleeping Bag (Sea to Summit): temperature rating f 28, insulation type down, fill power 850, shape mummy, packed weight lb 1.17. Full sourced spec sheet verified 2026-06-20.

Price of record: $409 at advnture.com, 2026-06-27. Other retailers may be lower — check the current price:

See Spark SpII Ultralight Down Sleeping Bag on Amazon As an Amazon Associate we earn from qualifying purchases.

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